I have a salvaged poker machine which a part that I cannot understand. Could someone help me understand it?

All that can be said is it has in puts and out puts, lots of transistors, resistors, and microcontrollers. It requires the same plug needed to power a Floppy drive, it has 2 places for USB one that connects directly to the mother board and anothother that is standard USB. it has written in small letters,PSG PCI 1/0 USB 11/11/2004 REV .04 Could someone please tell me what this part is and what I can use it for? I dont have anymore information about it but I can take more pictures if needed

well it was an arcade machine. It had no coin slot, Bill insert, or anything else that had to do with money so I beleive it was just an arcade game.the rest of the machine is not with me, It was noting but a wooden self that will most likely be converted into an instrument holder

Input section: Deals with all of the inputs to the device, generally human inputs from switches buttons etc, Others sensors monitoring other parts of the machine, temperature, movement, security etc and often time input

Processing section:

This deals with the decision making, what has been pressed, what to do about it, what has happened now, send signals to the output section. These days this is often done with micro processors, logic circuits or in the past using relay logic.

Output section:

This part drives the output devices you can see or relate to. Often visual, displays, lights, sounds vibration.

Your board is one, (or all), of these parts, which one depends much on what it is connected to in the real world.

Actually there are two buttons that control the machine which are bothe plugged into the 'input' section. On the 'output' section are the wires leadng to the lights within the buttons themselves. I'm not sure what this means as far a computers go butwhat I imagine is it works something like this Interaction>>>>Process>>>>light display>>>>Next Processjust as you have decribed previously